2SA1072A Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -150 V
• Emitter-Base Voltage, max: -7 V
• Collector Current − Continuous, max: -12 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 60 to 200
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SA1072A might only be marked "A1072A".The complementary NPN transistor to the 2SA1072A is the 2SC2522A.You can replace the 2SA1072A with the 2SA1073, 2SA908, 2SA909, 2SB697K, 2SB722 or 2SB723.